I have a first-generation Airport Extreme n base station, that recently has developed something of a problem. The router works fine in terms of networking, internet access, etc. The problem is it can't be configured. If I try to add a MAC address to the access list, add an Airport Express to extend the range, or set up port-forwarding to let me SSH into my machine, the following happens: 1. Click Reset 2. The router goes offline, says its restarting, but the Airport Configuration Utility never picks it back up. The status light flashes Amber, and while we can connect to the network, there is no outgoing internet connection - all the computers have a self-assigned IP. 3. Eventually, I have to reset the router via unplugging it. The green light comes back, all is well, but whatever changes to the router's setting I made are gone. If I reset the router to factory settings, I have a window of about one restart to make all my changes, and then the same problem sets in. Any idea what is happening? How to fix it? Or is my router just at the end of it's useful life?